Observaciones sobre aves migratorias del hemisferio norte [PDF]
El Hornero, 1967 A report from the easternmost Buenos Aires province, Argentina, based on observations during the months of November–February, 1958–1962. The 27 species observed are listed and the approximate number of specimens given. Of special interest is the abundant occurrence of the Golden Plover and the Hudsonian Godwit, which shows that these species have not ...
Olrog, Claës Ch.
openaire +6 more sources
Effects of nitrogen deposition on territory numbers of breeding birds. [PDF]
Conserv BiolAbstract Deposition of atmospheric N (nitrogen) is assumed to be a major cause of biodiversity decline in Europe. To date, few studies on the direct or indirect effects of N on bird species have been conducted. Using Swiss bird count data and habitat data, we analyzed the correlation of N deposition with numbers of territories of 112 breeding bird ...
Meichtry-Stier K +3 more
europepmc +2 more sources
Global review of shorebird tracking data to identify research gaps and conservation priorities. [PDF]
Conserv BiolAbstract Tracking has enabled rapid advances in knowledge of the movement behavior and habitat use of shorebirds and is thus making a growing contribution to their conservation. However, realizing the full potential that tracking holds for conservation involves understanding what has been performed on shorebirds to date and identifying regional and ...
Michel G +5 more
europepmc +2 more sources
Assessing the Corn Belt as an anthropogenic barrier to migrating landbirds in the United States. [PDF]
Conserv BiolAbstract Migrating landbirds adjust their flight and stopover behaviors to efficiently cross inhospitable geographies, such as the Gulf of Mexico and the Sahara Desert. In addition to these natural barriers, birds may increasingly encounter anthropogenic barriers created by large‐scale changes in land use. One such barrier could be the Corn Belt in the
Guo F +7 more
europepmc +2 more sources
Wintering Together: Do Migrants Impact Residents? A Literature Review. [PDF]
Ecol EvolThis review examines the overlooked impacts of interspecific competition on resident tropical birds during the overwintering period, highlighting the need for a deeper understanding of their interactions with migratory species. By evaluating the literature through the lens of competition theory, we identify critical gaps in knowledge and suggest that ...
Navarro-Velez KC, Dhondt AA.
europepmc +2 more sources
Conservation-focused mapping of avian migratory routes using a pan-European automated telemetry network. [PDF]
Conserv BiolAbstract Accelerated biodiversity loss has destabilized functional links within and between ecosystems. Species that cross different ecosystems during migration between breeding and nonbreeding sites are particularly sensitive to global change because they are exposed to various, often ecosystem‐specific, threats.
Mitchell L +10 more
europepmc +2 more sources
Habitat Changes at the Local Scale Have Major Impacts on Waterfowl Populations Across a Migratory Flyway. [PDF]
Glob Chang BiolMigratory waterbirds are declining worldwide due to habitat loss, but not much is known about how the loss of specific wetlands can affect waterbird populations at the biogeographical scale. To investigate that, we used the Guadalquivir Marshes (SW Spain) as a case study and combined 38 years of waterfowl winter counts with environmental and remote ...
de Felipe M +4 more
europepmc +2 more sources
Territorial and Non-Territorial Subpopulations of Wilson's Warblers Return to Central California Breeding Grounds in Two Migratory Waves. [PDF]
Ecol EvolIn this study of Wilson's Warblers, nearly all individuals returning early and becoming territorial were ASY birds, and very few were SY birds. However, second waves of returning Wilson's Warblers, containing both SY and ASY birds, returned about 3–5 weeks after the first migratory waves, and no males in these second waves ever became territorial ...
Gilbert WM.
europepmc +2 more sources
Chromosomal Inversion Associated With Diet Differences in Common Quails Sharing Wintering Grounds. [PDF]
Ecol EvolA large chromosomal inversion in common quails (Coturnix coturnix) is associated with phenotypic traits. In a wintering population in southern Spain, we found all three karyotypes coexisting but showing differences in migratory behavior and diet, as exemplified by the isotopic signature.
Vinagre-Izquierdo C +4 more
europepmc +2 more sources
Abundance, Diversity and Phenology of Mosquito Larvae in a Highly Anthropized Wetland: Health and Management Implications of Gándaras de Budiño (NW Spain). [PDF]
Ecol EvolThe natural and anthropized wetland of Gándaras de Budiño (Galicia, Spain) hosts a great number of mosquito species. Culex pipiens s.l. and Culex torrentium pose an emerging risk for West Nile virus transmission. The temporary and polluted waters, as well as the summer and spring seasons, favor the larval proliferation of these vectors.
Martínez-Barciela Y +2 more
europepmc +2 more sources